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Finding the Fourth Proportional to 120,161.80, 179,853.90 and 110,830.60

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Solution

The fourth proportional to 120,161.80, 179,853.90 and 110,830.60 is: 165,887.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,161.80 : 179,853.90 = 110,830.60 : x
  2. Step 2: Convert to fraction form
    120,161.80/179,853.90 = 110,830.60/x
  3. Step 3: Cross multiply
    120,161.80x = 179,853.90 × 110,830.60
  4. Step 4: Simplify right side
    120,161.80x = 19,933,315,649.34
  5. Step 5: Solve for x
    x = 19,933,315,649.34/120,161.80
  6. Step 6: Final answer
    x = 165,887.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.